a Q a Q a Q Q|------------------------------------------------||---------15------------10------------15---------||-17b19==(17)r--12b14==(12)r--17b19==(17)r-------||------------------------------------------------||------------------------------------------------||------------------------------------------------||-------------------------------------------12\--|

a E E a E E a E E a E E|---------12-------------12-------------12-------------12-----||-15b17==(15)r-0-15b17==(15)r-0-15b17==(15)r-0-15b17==(15)r-0-||-------------------------------------------------------------||-------------------------------------------------------------||-------------------------------------------------------------||-------------------------------------------------------------||-------------------------------------------------------------|

~~~ a Q a Q +E a Q.|----------------------------------------------||---------12----------4---(4)----------12------||-14b16==(14)r--6b8==(6)--(6)r-14b16==(14)r----||----------------------------------------------||----------------------------------------------||----------------------------------------------||----------------------------------------------|